A US fluid ounce is 1/128 of a US gallon.
Fluid ounces to Oil barrels Converter — fl oz to bbl
Convert Fluid ounce (fl oz) to Oil barrel (bbl) using the exact conversion factor (1 fluid ounce = 0.0001860119 oil barrel). See the formula, worked examples, conversion table, history, and common uses.
Fluid ounces to Oil barrels converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
An oil barrel is 42 US gallons.
Result = input x 2.95735296e-5 / 0.1589872949.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fluid ounces to Oil barrels
Fluid ounce and Oil barrel appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Fluid ounce is most often used for us beverage container sizing (soda, water bottles).
Formula
oil barrels = fluid ounces × 0.000186011904762
This factor comes from each unit's defined relationship to the category's base unit: 1 fluid ounce equals 0.0000295735295625 base units, and 1 oil barrel equals 0.158987294928 base units, so dividing one by the other gives the direct fluid ounce-to-oil barrel factor of 0.000186011904762.
Simple example
1 fl oz × 0.0001860119048 = 0.0001860119 bbl
1 fluid ounce = 0.0001860119 oil barrels.
Real-world example
10 fl oz × 0.0001860119048 = 0.001860119 bbl
10 fluid ounces = 0.001860119 oil barrels.
Conversion table
| Fluid ounce (fl oz) | Oil barrel (bbl) |
|---|---|
| 1 fl oz | 0.0001860119 bbl |
| 5 fl oz | 0.0009300595 bbl |
| 10 fl oz | 0.001860119 bbl |
| 25 fl oz | 0.0046502976 bbl |
| 50 fl oz | 0.0093005952 bbl |
| 100 fl oz | 0.0186011905 bbl |
Reverse conversion: Oil barrel to Fluid ounce
0.0001860119 bbl × 5376 = 0.9999999744 fl oz
0.0001860119 oil barrels = 0.9999999744 fluid ounces.
fluid ounces = oil barrels × 5376
For a page dedicated to this direction, see Oil barrel to Fluid ounce.
Understanding the Fluid ounce
Fluid ounce (fl oz) measures volume. The US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 milliliters. It is classified as a US customary unit.
Where it's used: United States (beverage, nutrition labeling)
Uses of the Fluid ounce today
- US beverage container sizing (soda, water bottles)
- US nutrition and medication dosing labels
History of the Fluid ounce
The US fluid ounce follows from the same English wine-gallon system as the rest of the US liquid volume units, defined as a consistent fraction of the gallon.
Historical origin. Fluid ounce was not the invention of a single named person; it developed through the process described above.
Understanding the Oil barrel (bbl)
An oil barrel is 42 US gallons.
Fluid ounce — sources
- NIST Handbook 44, Appendix C — General tables of units including the US fluid ounce definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many oil barrels are in 1 fluid ounce?
1 fluid ounce equals 0.0001860119 oil barrels, using the exact defined conversion factor rather than an estimate.
How do I convert fluid ounce to oil barrel?
Multiply the fluid ounce value by 0.0001860119048. The converter above does this instantly to whatever precision you set.
How do I convert oil barrel back to fluid ounce?
Use the reverse factor: 1 oil barrel equals 5,376 fluid ounces. You can also use the swap control in the converter above to flip the direction instantly.
What is a fluid ounce?
Fluid ounce (fl oz) measures volume. The US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 milliliters. It is classified as a US customary unit.
What is a oil barrel?
Oil barrel (bbl) is a unit of volume.
Is the fluid ounce to oil barrel conversion exact?
Yes. The US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 milliliters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the fluid ounce still used today?
United States (beverage, nutrition labeling)